Summary Of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2014

Summary Of Significant Accounting Policies [Abstract]

Net Income Allocation

	For The Three Months
	Ended March 31,
	2014		2013
Net income allocable to noncontrolling interests:
Noncontrolling interests — common units	$	2,703	$	2,566
Total net income allocable to noncontrolling interests		2,703		2,566
Net income allocable to PS Business Parks, Inc.:
Preferred shareholders		15,122		13,850
Restricted stock unit holders		36		33
Common shareholders		9,940		8,540
Total net income allocable to PS Business Parks, Inc.		25,098		22,423
Net income	$	27,801	$	24,989

Calculation Of Earnings Per Share

	For The Three Months
	Ended March 31,
	2014		2013
Net income allocable to common shareholders	$	9,940	$	8,540
Weighted average common shares outstanding:
Basic weighted average common shares outstanding		26,863		24,308
Net effect of dilutive stock compensation — based on
treasury stock method using average market price		98		103
Diluted weighted average common shares outstanding		26,961		24,411
Net income per common share — Basic	$	0.37	$	0.35
Net income per common share — Diluted	$	0.37	$	0.35